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Finding the Fourth Proportional to 68,467.70, 102,701.55 and 31,013.30

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Solution

The fourth proportional to 68,467.70, 102,701.55 and 31,013.30 is: 46,519.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,467.70 : 102,701.55 = 31,013.30 : x
  2. Step 2: Convert to fraction form
    68,467.70/102,701.55 = 31,013.30/x
  3. Step 3: Cross multiply
    68,467.70x = 102,701.55 × 31,013.30
  4. Step 4: Simplify right side
    68,467.70x = 3,185,113,980.62
  5. Step 5: Solve for x
    x = 3,185,113,980.62/68,467.70
  6. Step 6: Final answer
    x = 46,519.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.